Best Portable Gas Detectors

Selecting the right portable gas detector is rarely straightforward. The range of sensing technologies, form factors, battery configurations, connectivity options and maintenance models available in the market means that procurement teams, safety managers and HSE leads face a genuinely complex decision, one where the wrong choice can affect compliance, uptime and, ultimately, worker safety.

This guide covers Crowcon’s full portable gas detection range: from disposable single-gas monitors through to connected multi-gas instruments, specialist methane detectors and transportable area monitors. It is written for buyers evaluating portable gas detection across industries including oil and gas, utilities, chemicals, water, food and beverage, pharmaceuticals and general industry. 

The aim is to explain what each product does, who it is designed for, and how it fits within the broader Crowcon portable ecosystem, so that the reader can identify the right instrument, or combination of instruments, for their operational requirements.

The IQ Range: Designed to Simplify Portable Gas Detection

Portable gas detectors have traditionally been treated as individual products. Single-gas detectors sat in one fleet, area monitors in another, and servicing infrastructure operated separately again. As organisations have grown, this fragmented approach has increased the administrative burden of keeping workers protected and devices compliant.

The IQ range was developed to solve that problem.

Built around modular sensor technology, rapid servicing and seamless connectivity through Crowcon Connect and IQHub, the IQ ecosystem brings together personal monitoring, area monitoring and compliance management within a single platform. Pre-calibrated sensor trays can be replaced in seconds without manufacturer intervention, while downward-facing sensors help reduce nuisance alarms caused by exhaled breath and environmental contamination.

The result is a more flexible approach to portable gas detection—one that helps organisations adapt to changing hazards, simplify maintenance and keep more devices available for use in the field.

UnoIQ

The UnoIQ is designed for personal single-gas monitoring in environments where targeted protection against one specific hazard is the primary requirement.

UnoIQ is a compact, rechargeable single-gas detector that supports electrochemical, infrared, pellistor and long-life O₂ sensor technologies. This breadth of sensor compatibility means a single device platform can be configured for flammable gas, oxygen, carbon monoxide, hydrogen sulphide, ammonia, chlorine and a range of other toxic gases. Pre-calibrated sensor trays swap in seconds, and the device can be upgraded mid-life from single-gas to dual-gas detection without replacing the unit, extending the investment and adapting to changing site requirements.

Battery life varies by sensor type. With toxic or oxygen sensors, UnoIQ delivers up to 10 days of continuous runtime or approximately 31 days on standard 8-hour shifts. IR configurations provide up to 4 days on 8-hour shifts, and pellistor configurations up to 3 days. The device recharges to 80% in two hours and to full charge in under three hours. It connects to Crowcon Connect via Bluetooth for real-time fleet oversight and compliance tracking, and integrates with IQHub for bump testing in under 10 seconds and full calibration in 30 seconds. The unit weighs 135 g, has passed a 6-metre drop test and is rated IP66/IP67/IP68.

Within Crowcon’s broader portable range, UnoIQ serves as the entry point into the IQ ecosystem and the natural replacement for traditional disposable and rechargeable single-gas monitors where connectivity and modularity are priorities.

Feature	Detail
Primary use case	Single-gas personal monitoring
Gas coverage	One gas; supports electrochemical, IR, pellistor and long-life O₂ sensors
Battery life	Toxic/O₂: 10 days continuous, 31 days at 8-hour shifts; IR: 4 days; Pellistor: 3 days
Key differentiator	Mid-life upgrade to dual-gas; modular swappable sensor trays
Connectivity	Bluetooth to Crowcon Connect; IQHub integration
Durability	6 m drop test; IP66/IP67/IP68; 135 g
Best suited to	Organisations needing connected, flexible single-gas monitoring with low maintenance overhead

DuoIQ

Not every worker needs a four-gas monitor. In many environments, the challenge is protecting against two known hazards without introducing the size, weight and complexity of a full multi-gas instrument.

DuoIQ was developed to bridge that gap.

Using the same modular sensor tray platform as UnoIQ, it allows organisations to combine two gas hazards in a single wearable device while maintaining the simplicity and flexibility of the wider IQ ecosystem.

DuoIQ monitors two gases in one compact device, using the same modular sensor tray platform as UnoIQ. It supports every major sensor technology and offers unique sensor combinations, such as pairing a toxic sensor with an oxygen sensor, or combining two different toxic sensors in a single wearable unit. This flexibility removes the need to carry two separate single-gas monitors or step up to a larger four- or five-gas device when only two hazards are present.

Battery performance varies depending on the sensor configuration selected. Toxic and oxygen combinations provide up to 7 days of continuous operation, equivalent to approximately 20 days based on standard 8-hour shifts. Configurations combining toxic or oxygen sensors with infrared sensing deliver up to 1 day of continuous operation, or around 4 days on 8-hour shifts, while pellistor configurations provide up to 1 day of continuous use, equivalent to approximately 3 days at 8-hour shifts.

Recharge time is also designed to minimise downtime, with the battery reaching 80% capacity in just 2 hours and a full charge achieved in less than 3 hours.

DuoIQ shares UnoIQ’s robust 6-metre drop-test rating and IP68 ingress protection, supporting reliable performance in demanding industrial environments. It integrates with Crowcon Connect and IQHub to enable connected compliance, automated servicing and fleet visibility from a single ecosystem.

Its downward-facing sensor design helps reduce false CO₂ alarms caused by exhaled breath and environmental contamination, while its Red Dot Award-winning industrial design reflects human-centred thinking developed through field studies and confined space training with end users.

DuoIQ fills an important gap in the Crowcon portable range. It gives safety teams a genuinely compact dual-gas option that sits between UnoIQ and the larger four-gas T4x, offering broader protection than a single-gas device without the weight, complexity or cost of a full multi-gas monitor.

Feature	Detail
Primary use case	Dual-gas personal monitoring
Gas coverage	Two gases simultaneously; all major sensor technologies supported
Battery life	Tox / O2 | tox : 7 days, (20 days at 8 hour shifts) Tox / O2 | IR: 1 day (4 days at 8 hour shifts) Tox / O2 | Pellistor: 1 day (3 days at 8 hour shifts) Recharge time: 0-80% 2 hours; 0-100% <3 hours
Key differentiator	Red Dot Award-winning design; unique dual-gas sensor combinations in compact form
Connectivity	Bluetooth to Crowcon Connect; IQHub integration; NFC workforce tracking
Durability	6 m drop test; IP68; 135 g
Best suited to	Workers facing two concurrent gas hazards who need compact, connected protection

DetectiveIQ

Shutdowns, turnarounds and temporary worksites often require protection in locations where installing fixed detection simply isn’t practical. The challenge is creating reliable coverage that can move as the work moves.

DetectiveIQ was designed specifically for these environments.

Combining long runtime, configurable multi-gas detection and mesh networking, it enables organisations to establish temporary safety perimeters quickly and adapt them as site conditions evolve.

DetectiveIQ detects up to seven gases simultaneously using the same modular sensor tray platform as the IQ wearables. It supports electrochemical, PID, IR, MPS™, pellistor and long-life oxygen sensors, with response times typically under 20 seconds. An optional pumped module enables gas sampling at distances up to 30 metres from the unit.

Battery life is a standout capability. DetectiveIQ delivers up to 101+ days of continuous runtime on a single charge, with a full recharge in approximately eight hours. The unit is rated IP66 and IP67/IP68, and its outer casing, boot and handles are all designed for easy field replacement.

Bluetooth Mesh connectivity links up to 250 DetectiveIQ units across 10 groups, covering distances up to 2.5 km with wide-area alarm passing. Up to 25 devices can be interconnected for coordinated perimeter monitoring. A 95 dB alarm and 360-degree LED beacons ensure that hazard warnings are visible and audible even in noisy, low-light environments.

Within the Crowcon portable ecosystem, DetectiveIQ extends IQ range coverage from personal wearables to site-wide area protection. It connects to IQHub and Crowcon Connect in the same way as UnoIQ and DuoIQ, giving fleet managers a single compliance and monitoring layer across all IQ devices.

Feature	Detail
Primary use case	Multi-gas area monitoring for temporary worksites
Gas coverage	Up to 7 gases simultaneously; all major sensor technologies
Battery life	Up to 101+ days continuous; 8-hour recharge (sensor combination dependant)
Key differentiator	Bluetooth Mesh linking up to 250 units over 2.5 km; optional 30 m pump
Connectivity	Bluetooth Mesh; Crowcon Connect; IQHub
Durability	IP66/IP67/IP68; 95 dB alarm; 360-degree LED beacons
Best suited to	Shutdowns, turnarounds, confined space perimeters and fenceline monitoring

Multi-Gas Personal Monitors

For buyers who need detection of three or more gases in a single personal instrument, Crowcon offers a range of multi-gas monitors designed for different operational contexts: from everyday four-gas compliance through to advanced confined space entry, infrared hydrocarbon detection, VOC monitoring and tank inerting.

T4x

For many organisations, the four-gas monitor is the instrument workers carry every day. Reliability, simplicity and low maintenance overhead therefore matter just as much as sensing performance.

T4x was developed to meet those expectations while reducing the operational burden associated with large fleets.

T4x detects the four most common gas hazards — carbon monoxide, hydrogen sulphide, flammable gases and oxygen depletion — in a compact, single-button instrument. It is available with three sensor technology options: a dual toxic sensor for CO and H₂S, a long-life oxygen sensor (LLO₂), and the MPS™ (Molecular Property Spectrometer) sensor, which detects over 15 different flammable gases in any combination with zero risk of sensor poisoning. This MPS™ technology eliminates the need to calibrate each device for a specific flammable gas, simplifying fleet management across multi-site operations.

T4x offers a 35+ hour battery life, approximately double that of its predecessor, the T4. It features an integrated rubber boot, a clip-on filter for dusty environments, and is drop-tested to 4 metres with IP65 and IP67 ingress protection. The TWA Resume function ensures toxic gas exposure is calculated accurately across an entire shift, even if the device is switched off for a break or transit. T4x is Zone 0 ATEX approved.

T4x connects to I-Test for automated bump testing and calibration, and to Crowcon Connect for fleet compliance tracking. Within Crowcon’s broader portable range, T4x functions as the everyday four-gas anchor — the device most workers carry as standard personal protection, complemented by specialist instruments from the Gas-Pro range where additional capability is needed.

Feature	Detail
Primary use case	Everyday four-gas compliance monitoring
Gas coverage	CO, H₂S, flammable gases (MPS™ detects 15+), O₂
Battery life	35+ hours
Key differentiator	MPS™ sensor: poison-resistant, detects 15+ flammable gases without recalibration
Connectivity	I-Test; Crowcon Connect
Durability	4 m drop test; IP65/IP67; Zone 0 ATEX; integrated rubber boot
Best suited to	Fleet-wide four-gas protection with low total cost of ownership

Tetra 3

The Tetra 3 is designed for multi-gas monitoring in demanding industrial environments where a compact, diffusion-based detector with an expanded gas range is required.

Tetra 3 can detect the standard four gases (carbon monoxide, methane, oxygen and hydrogen sulphide) but also supports an expanded range including ammonia, ozone, sulphur dioxide, H₂-filtered CO for steel plants, and infrared carbon dioxide for safe-area use. This sensor flexibility makes it well suited to water, telecoms, food, brewing and hydrocarbon sectors where gas hazards extend beyond the standard four.

The device weighs less than 300 g and features single-button operation with a top-mounted, backlit display. It provides over 14 hours of continuous operation from a rechargeable lithium-ion battery and is rated IP65 and IP67. A 3-year O₂ sensor is included as standard. The T3 Gas Tester offers a dedicated bump test solution, and C-Test provides configuration updates and compliance management for larger fleets.

Within the Crowcon multi-gas range, Tetra 3 complements T4x by covering environments where gases beyond the standard four — particularly ammonia, ozone and sulphur dioxide — are present, or where a proven, lightweight diffusion-based detector is the operational preference.

Feature	Detail
Primary use case	Multi-gas monitoring in water, telecoms, food, brewing and hydrocarbon environments
Gas coverage	Standard four plus ammonia, ozone, SO₂, H₂-filtered CO, IR CO₂
Battery life	14+ hours
Key differentiator	Expanded gas range beyond standard four; 3-year O₂ sensor
Connectivity	C-Test; Crowcon Portables PC software
Durability	IP65/IP67; under 300 g; shatterproof housing
Best suited to	Sites with non-standard toxic gas hazards or where extended sensor options are needed

Gas-Pro

Confined space work demands more from a gas detector than routine compliance monitoring. Pre-entry testing, pumped sampling and the ability to adapt to specialist applications all become critical to safe operation.

Gas-Pro was designed around these realities.

It combines everyday personal monitoring with integrated pumped sampling and specialist variants for infrared hydrocarbon detection, PID-based VOC monitoring and tank inerting applications, allowing organisations to standardise on a familiar platform across a wide range of entry scenarios.

Gas-Pro detects up to five gases with an optional internal pump that activates automatically when the flow plate is attached, enabling pre-entry testing with sample draw from up to 30 metres. In diffusion mode, the same instrument functions as a standard personal monitor. The top-mounted display with dual-colour backlight (green/red) provides clear visibility in poorly lit and confined conditions.

Infrared sensor options are available for flammable gas and carbon dioxide detection, and the device supports a wide range of toxic sensor configurations. Battery life is approximately 14 hours from a full charge in standard four-gas configuration, or 13 hours in pumped operation. Gas-Pro is rated IP65 and IP67, and connects to I-Test for automated bump testing and calibration.

Within the Crowcon portable range, Gas-Pro is the confined space specialist — the instrument safety teams reach for when pre-entry checks, pump-assisted sampling and five-gas capability are needed alongside everyday personal monitoring.

Feature	Detail
Primary use case	Confined space entry and advanced five-gas monitoring
Gas coverage	Up to 5 gases; IR options for flammable and CO₂; wide toxic range
Battery life	14 hours diffusion; 13 hours pumped
Key differentiator	Built-in pump with 30 m sample draw; pre-entry check mode
Connectivity	I-Test; Crowcon Portables PC software
Durability	IP65/IP67; single-button operation; +ve Safety continuous reassurance
Best suited to	Confined space teams and applications requiring pumped pre-entry sampling

Gas-Pro IR

The Gas-Pro IR is designed for oil and gas, petrochemical and refinery environments where infrared flammable gas detection provides superior reliability and resistance to sensor poisoning compared to catalytic sensors.

Gas-Pro IR uses an infrared sensor for flammable gas detection, which is immune to the silicone and lead poisoning that can degrade traditional pellistor sensors in contaminated environments. It shares the same form factor, pump capability and operational interface as the standard Gas-Pro, maintaining consistency across the fleet while providing enhanced sensor reliability in hydrocarbon-rich atmospheres.

Within the broader Gas-Pro family, the IR variant adds important depth for buyers operating in environments with known poisoning risks, without requiring operators to learn a different instrument or maintenance workflow.

Feature	Detail
Primary use case	Flammable gas monitoring in poisoning-prone environments
Gas coverage	IR flammable gas plus toxic and O₂ sensors
Battery life	Comparable to standard Gas-Pro
Key differentiator	IR sensor immune to silicone and lead poisoning
Connectivity	I-Test; Crowcon Portables PC software
Best suited to	Oil and gas, petrochemical and refinery applications

Gas-Pro PID

The Gas-Pro PID is designed for environments with volatile organic compounds (VOCs), including chemical plants, refineries, pharmaceutical facilities and workplaces where solvents, paints and adhesives are in use.

Gas-Pro PID incorporates a photoionisation detection sensor capable of detecting hundreds of different VOCs at low concentrations. The PID sensor sits alongside the standard Gas-Pro sensor configuration, providing combined personal multi-gas monitoring and broad-range VOC detection in a single instrument. It shares the same pump capability, form factor and operational interface as other Gas-Pro variants.

Within the Gas-Pro family, the PID variant extends Crowcon’s portable range into occupational hygiene and environmental monitoring territory, covering applications where trace-level VOC exposure needs to be measured alongside standard combustible, toxic and oxygen monitoring.

Feature	Detail
Primary use case	VOC monitoring alongside multi-gas detection
Gas coverage	Hundreds of VOCs via PID sensor, plus standard toxic, flammable and O₂
Battery life	Comparable to standard Gas-Pro
Key differentiator	Broad-range PID sensor for trace-level VOC detection
Connectivity	I-Test; Crowcon Portables PC software
Best suited to	Chemical, pharmaceutical, refinery and solvent-use environments

Gas-Pro TK

The Gas-Pro TK is designed for tank monitoring applications, specifically the inerting, purging and filling of tanks and pipelines where dual-range infrared measurement is critical.

Gas-Pro TK features a dual infrared sensor that measures flammable gas concentration in both %LEL and %volume ranges, which is essential for monitoring inerting processes where gas concentrations move above and below the explosive range. It also functions as a standard personal multi-gas monitor with pump capability, enabling confined space pre-entry checks alongside dedicated tank monitoring.

Within the Gas-Pro family, Gas-Pro TK fills a specialist role that no general-purpose multi-gas monitor can replicate. Its dual-range IR measurement makes it the appropriate instrument wherever tank atmospheres need to be verified during inerting, filling or purging operations.

Feature	Detail
Primary use case	Tank inerting, purging and atmosphere verification
Gas coverage	Dual-range IR flammable (%LEL and %volume) plus toxic and O₂
Battery life	Comparable to standard Gas-Pro
Key differentiator	Dual IR sensor for both %LEL and %volume measurement
Connectivity	I-Test; Crowcon Portables PC software
Best suited to	Tank cleaning, inerting, filling and pipeline purging operations

Single-Gas Detectors

Not every application requires multi-gas monitoring. In environments where a single, known gas hazard is the primary risk, a dedicated single-gas detector offers focused, reliable protection with minimal training and maintenance overhead. Crowcon offers two established single-gas platforms alongside the IQ range’s UnoIQ, each designed for a different operational model.

Gasman

The Gasman is designed for personal single-gas monitoring across the broadest range of gas types, including exotic and specialist gases not covered by disposable or basic single-gas detectors.

Gasman is a rechargeable, compact single-gas detector weighing just 130 g, available with an extensive range of sensor options: flammable gases (pellistor and MPS™), oxygen, carbon monoxide, hydrogen sulphide, chlorine, ammonia, sulphur dioxide, ozone, nitrogen dioxide, hydrogen, hydrogen cyanide, phosphine, hydrogen fluoride, fluorine, phosgene, chlorine dioxide, nitric oxide, ethylene oxide and infrared carbon dioxide. This makes it the most versatile single-gas platform in the Crowcon range.

Gasman features 95 dB audible alarms, red/blue visual warnings, a vibrating alarm, single-button control and a backlit LCD display. Data and event logging are included as standard, with a built-in 30-day advance warning when calibration is due. The device is rated IP65.

Within Crowcon’s single-gas range, Gasman is the established platform for buyers who need a rechargeable detector with the widest possible gas coverage, TWA monitoring and data logging capability, particularly in industries such as chemicals, steel, renewable energy, hospitality and water treatment where specialist or exotic gas detection is required.

Feature	Detail
Primary use case	Single-gas monitoring for specialist and exotic gas applications
Gas coverage	20+ gas options including flammable, toxic, O₂ and IR CO₂
Battery life	Rechargeable; runtime depends on sensor type and operating pattern
Key differentiator	Broadest sensor range of any Crowcon single-gas detector; 130 g
Connectivity	PC interface for data download
Durability	IP65; 95 dB alarm; vibrating alert
Best suited to	Chemical plants, steel works, utilities and applications requiring exotic gas detection

Clip SGD

The Clip SGD is designed for organisations that need maintenance-free, disposable single-gas protection where low upfront cost and operational simplicity are priorities.

Clip SGD is a fixed-lifespan, disposable single-gas detector with a two-year operational life. It is available for hydrogen sulphide (H₂S), carbon monoxide (CO) or oxygen (O₂). At 93 g for toxic versions and 104 g for oxygen, it is lightweight and non-intrusive. The device features visual, audible (90 dB) and vibrating alarms, single-button operation, event logging and changeable alarm levels.

A dedicated docking station supports bump testing, calibration, event management and configuration updates across large fleets, with data stored on USB for easy transfer. Clip SGD is rated IP66 and IP67.

Within the Crowcon single-gas range, Clip SGD serves the budget-conscious end of the market where maintenance-free operation and disposable simplicity are the driving requirements. It is a practical choice for contractors, temporary workers and large-fleet deployments where per-unit cost and zero-maintenance are decisive factors.

Feature	Detail
Primary use case	Disposable, maintenance-free single-gas protection
Gas coverage	H₂S, CO or O₂
Operational life	2 years (fixed lifespan; non-rechargeable)
Key differentiator	Zero maintenance; disposable; 93 g
Connectivity	Clip SGD docking station for bump test, calibration and fleet management
Durability	IP66/IP67; 90 dB alarm
Best suited to	Contractors, temporary workforces and large fleets where per-unit cost and simplicity are priorities

Specialist Detection

L-TEK P100

The L-TEK P100 is designed for non-contact methane leak detection across petroleum, chemical processing, mining and urban gas distribution environments.

L-TEK P100 uses TDLAS (Tunable Diode Laser Absorption Spectroscopy) technology to detect methane concentrations at distance. The single-mode laser targets methane’s specific infrared absorption line, avoiding interference from other gases and environmental conditions. A standard-range model detects at up to 20 metres, and a long-range variant extends to 50 metres, enabling safe inspection of fenced-off, elevated or hard-to-reach infrastructure without requiring the operator to enter the hazard zone.

The device is compact (138 × 49 × 36 mm), weighs 300 g and uses a visible green laser beam for precise aiming. It is calibration-free, which significantly reduces ongoing maintenance costs, and non-contact measurement prevents sensor poisoning, extending product life. Data extraction via USB supports time-stamped reporting and analysis. L-TEK P100 is ATEX and IECEx certified for Zone 1 use, with a Zone 0 rated laser.

Within the Crowcon portable range, L-TEK P100 fills a specialist role that no conventional contact-based gas detector can perform. It is the appropriate instrument wherever long-distance, non-contact methane measurement is required for pipeline surveys, plant inspections and leak detection across industrial and urban gas infrastructure.

Feature	Detail
Primary use case	Non-contact methane leak detection at distance
Gas coverage	Methane only (TDLAS technology)
Detection range	Up to 20 m (standard); up to 50 m (long-range variant)
Key differentiator	Calibration-free; non-contact measurement; no sensor poisoning
Certifications	ATEX/IECEx Zone 1; Zone 0 laser
Weight	300 g
Best suited to	Pipeline surveys, plant inspections and urban gas leak detection

Portable Maintenance and Compliance Infrastructure

Portable gas detection is not only about the instrument on the worker. It is also about how efficiently that fleet is charged, bump tested, calibrated, tracked and returned to service. The maintenance and compliance layer often determines the true total cost of ownership and operational uptime of a portable gas detection estate. Crowcon provides dedicated infrastructure for both the IQ range and the established Gas-Pro and T4 families.

IQHub

IQHub is the all-in-one docking, testing, calibration and charging station for the IQ range. It calibrates, bump tests and charges UnoIQ, DuoIQ and DetectiveIQ devices from a single unit. Its industry-first tubeless design simplifies servicing and enhances testing accuracy across all gases, including notoriously sticky gases such as chlorine, ammonia and hydrogen sulphide.

Bump tests complete in under 10 seconds and full calibrations in 30 seconds. Compliance data syncs automatically to Crowcon Connect, providing fleet managers with real-time oversight of device status, alarm history and test records across all IQ devices.

I-Test

I-Test is Crowcon’s fully automated bump test and calibration station for Gas-Pro and T4 devices. The operator inserts the device and testing starts automatically with no button presses required. A bump test completes in under one minute, verifying sensor response, filter condition and alarm function. I-Test Manager software provides exception reporting, bump and calibration certificates, and tailored compliance reports.

Crowcon Connect

Crowcon Connect is the cloud-hosted web application that ties the portable ecosystem together. It provides real-time visibility of alarms, device configurations, usage patterns, bump test status and compliance across both IQ range and legacy portable devices. For safety and fleet managers, it offers a single dashboard for monitoring the operational readiness of every portable gas detector in the estate.

Choosing the Right Product

The right portable gas detector depends on the specific hazards present, the operational context, the level of connectivity required and the maintenance model that best fits the organisation. The table below maps common operational priorities to the Crowcon product best suited to address them.

If your priority is…	Consider
Everyday four-gas compliance across a large fleet	T4x
Connected single-gas monitoring with modular flexibility	UnoIQ
Dual-gas protection in a compact wearable	DuoIQ
Confined space pre-entry checks with pumped sampling	Gas-Pro
Flammable gas detection in silicone/lead poisoning environments	Gas-Pro IR
VOC monitoring alongside standard multi-gas detection	Gas-Pro PID
Tank inerting, purging and dual-range %LEL/%volume	Gas-Pro TK
Extended gas range including ammonia, ozone, SO₂	Tetra 3
Specialist or exotic single-gas detection (20+ gas options)	Gasman
Budget-conscious disposable single-gas protection	Clip SGD
Non-contact methane leak detection at distance	L-TEK P100
Area monitoring for temporary worksites with mesh networking	DetectiveIQ
Next-generation fleet management with sub-10-second bump tests	IQHub + Crowcon Connect
Automated bump testing for Gas-Pro and T4 fleets	I-Test

Summary

Choosing a portable gas detector is not simply a matter of selecting the device with the longest specification sheet.

The right choice depends on the hazards present, the way people work and how the organisation intends to maintain compliance over the life of the fleet.

Some sites need straightforward four-gas protection. Others require specialist confined space instruments, disposable single-gas detectors or non-contact methane measurement. Increasingly, organisations are also looking for ways to simplify servicing, improve visibility and reduce the administrative burden associated with managing large estates of portable devices.

Crowcon’s portable portfolio has been developed to address each of these challenges—from everyday compliance monitoring and specialist applications through to connected ecosystems that bring detectors, servicing and compliance together in a single workflow.

The goal is simple: helping organisations match the right detector to the right risk while making portable gas detection easier to own, manage and trust over the long term.